{
  "manageEntity": {
    "action": "Save",
    "entityId": "1246956916",
    "entityType": "Track",
    "nonce": "0xbe61837d233e7f953c3c62ee5c64b8aebc43eb04678242c7ad2bd5fcdcee4628",
    "signature": "0x88b948e0042cbe6ca605505a72e3219d9c3d241e205ea715ae81294d113e32e530f28e847f81b4176f5b3b1180a04979071b7105f548d80001cebf6eddbbf8b81b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}